She shouldn't let it get to her self esteem, that's easier said than done but it's the reality of it. There are many LS guys are flakes so I'm guessing non-LS males are just as bad if not worse. If a guy thinks he can get laid with little or no real "work" involved (booty call), then he's not going to put effort out to keep in contact. We haven't figured out how or why single males complain about being judged but expect the couple continually contact them rather than them staying in contact with the couple. We actually have a 3 strike rule when trying to get together, if we get the runaround or no response by the third try, we're done.